If your destination is east of Village Center Drive (shown in blue), use Yorba Linda Boulevard/Weir Canyon Road from the Riverside Freeway to get to and from your destination. If your destination is west of Village Center, use Imperial Highway to the greatest extent possible to get to and from your destination.
Less common causes. There are also a number of other, less common causes of mouth ulcers. Some of these are listed below: 1  Herpes simplex infection: a highly contagious virus, also known as the 'cold sore virus', which can cause cold sores on the mouth and the genitals.
Damaged to the mouth from hot or spicy foods, chewing tobacco or smoking can cause mouth ulcers. Mouth ulcers may also result from specific medications, including chemotherapy. Underlying conditions that are common causes of mouth ulcers include deficiencies in certain vitamins and minerals and hormonal changes.